B. K. Jasim, A. A. Al-Ani, and S. N. Abood, “Using Gaussian Basis-Sets with Gaussian Nuclear Charge Distribution to Solve Dirac-Hartree-Fock Equation for 83Bi-Atom”, Al-Nahrain J. Sci., vol. 19, no. 3, pp. 70–76, May 2018, Accessed: May 22, 2026. [Online]. Available: https://anjs.edu.iq/index.php/anjs/article/view/207